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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
#include "arrow/util/compression.h"
#include <memory>
#include <string>
#include <utility>
#include "arrow/result.h"
#include "arrow/status.h"
#include "arrow/util/compression_internal.h"
#include "arrow/util/config.h"
#include "arrow/util/logging.h"
namespace arrow20 {
namespace util {
namespace {
Status CheckSupportsCompressionLevel(Compression::type type) {
if (!Codec::SupportsCompressionLevel(type)) {
return Status::Invalid(
"The specified codec does not support the compression level parameter");
}
return Status::OK();
}
} // namespace
int Codec::UseDefaultCompressionLevel() { return kUseDefaultCompressionLevel; }
Status Codec::Init() { return Status::OK(); }
const std::string& Codec::GetCodecAsString(Compression::type t) {
static const std::string uncompressed = "uncompressed", snappy = "snappy",
gzip = "gzip", lzo = "lzo", brotli = "brotli",
lz4_raw = "lz4_raw", lz4 = "lz4", lz4_hadoop = "lz4_hadoop",
zstd = "zstd", bz2 = "bz2", unknown = "unknown";
switch (t) {
case Compression::UNCOMPRESSED:
return uncompressed;
case Compression::SNAPPY:
return snappy;
case Compression::GZIP:
return gzip;
case Compression::LZO:
return lzo;
case Compression::BROTLI:
return brotli;
case Compression::LZ4:
return lz4_raw;
case Compression::LZ4_FRAME:
return lz4;
case Compression::LZ4_HADOOP:
return lz4_hadoop;
case Compression::ZSTD:
return zstd;
case Compression::BZ2:
return bz2;
default:
return unknown;
}
}
Result<Compression::type> Codec::GetCompressionType(const std::string& name) {
if (name == "uncompressed") {
return Compression::UNCOMPRESSED;
} else if (name == "gzip") {
return Compression::GZIP;
} else if (name == "snappy") {
return Compression::SNAPPY;
} else if (name == "lzo") {
return Compression::LZO;
} else if (name == "brotli") {
return Compression::BROTLI;
} else if (name == "lz4_raw") {
return Compression::LZ4;
} else if (name == "lz4") {
return Compression::LZ4_FRAME;
} else if (name == "lz4_hadoop") {
return Compression::LZ4_HADOOP;
} else if (name == "zstd") {
return Compression::ZSTD;
} else if (name == "bz2") {
return Compression::BZ2;
} else {
return Status::Invalid("Unrecognized compression type: ", name);
}
}
bool Codec::SupportsCompressionLevel(Compression::type codec) {
switch (codec) {
case Compression::GZIP:
case Compression::BROTLI:
case Compression::ZSTD:
case Compression::BZ2:
case Compression::LZ4_FRAME:
case Compression::LZ4:
return true;
default:
return false;
}
}
Result<int> Codec::MaximumCompressionLevel(Compression::type codec_type) {
RETURN_NOT_OK(CheckSupportsCompressionLevel(codec_type));
ARROW_ASSIGN_OR_RAISE(auto codec, Codec::Create(codec_type));
return codec->maximum_compression_level();
}
Result<int> Codec::MinimumCompressionLevel(Compression::type codec_type) {
RETURN_NOT_OK(CheckSupportsCompressionLevel(codec_type));
ARROW_ASSIGN_OR_RAISE(auto codec, Codec::Create(codec_type));
return codec->minimum_compression_level();
}
Result<int> Codec::DefaultCompressionLevel(Compression::type codec_type) {
RETURN_NOT_OK(CheckSupportsCompressionLevel(codec_type));
ARROW_ASSIGN_OR_RAISE(auto codec, Codec::Create(codec_type));
return codec->default_compression_level();
}
Result<std::unique_ptr<Codec>> Codec::Create(Compression::type codec_type,
const CodecOptions& codec_options) {
if (!IsAvailable(codec_type)) {
if (codec_type == Compression::LZO) {
return Status::NotImplemented("LZO codec not implemented");
}
auto name = GetCodecAsString(codec_type);
if (name == "unknown") {
return Status::Invalid("Unrecognized codec");
}
return Status::NotImplemented("Support for codec '", GetCodecAsString(codec_type),
"' not built");
}
auto compression_level = codec_options.compression_level;
if (compression_level != kUseDefaultCompressionLevel &&
!SupportsCompressionLevel(codec_type)) {
return Status::Invalid("Codec '", GetCodecAsString(codec_type),
"' doesn't support setting a compression level.");
}
std::unique_ptr<Codec> codec;
switch (codec_type) {
case Compression::UNCOMPRESSED:
return nullptr;
case Compression::SNAPPY:
#ifdef ARROW_WITH_SNAPPY
codec = internal::MakeSnappyCodec();
#endif
break;
case Compression::GZIP: {
#ifdef ARROW_WITH_ZLIB
auto opt = dynamic_cast<const GZipCodecOptions*>(&codec_options);
codec = internal::MakeGZipCodec(compression_level,
opt ? opt->gzip_format : GZipFormat::GZIP,
opt ? opt->window_bits : std::nullopt);
#endif
break;
}
case Compression::BROTLI: {
#ifdef ARROW_WITH_BROTLI
auto opt = dynamic_cast<const BrotliCodecOptions*>(&codec_options);
codec = internal::MakeBrotliCodec(compression_level,
opt ? opt->window_bits : std::nullopt);
#endif
break;
}
case Compression::LZ4:
#ifdef ARROW_WITH_LZ4
codec = internal::MakeLz4RawCodec(compression_level);
#endif
break;
case Compression::LZ4_FRAME:
#ifdef ARROW_WITH_LZ4
codec = internal::MakeLz4FrameCodec(compression_level);
#endif
break;
case Compression::LZ4_HADOOP:
#ifdef ARROW_WITH_LZ4
codec = internal::MakeLz4HadoopRawCodec();
#endif
break;
case Compression::ZSTD:
#ifdef ARROW_WITH_ZSTD
codec = internal::MakeZSTDCodec(compression_level);
#endif
break;
case Compression::BZ2:
#ifdef ARROW_WITH_BZ2
codec = internal::MakeBZ2Codec(compression_level);
#endif
break;
default:
break;
}
DCHECK_NE(codec, nullptr);
RETURN_NOT_OK(codec->Init());
return codec;
}
// use compression level to create Codec
Result<std::unique_ptr<Codec>> Codec::Create(Compression::type codec_type,
int compression_level) {
return Codec::Create(codec_type, CodecOptions{compression_level});
}
bool Codec::IsAvailable(Compression::type codec_type) {
switch (codec_type) {
case Compression::UNCOMPRESSED:
return true;
case Compression::SNAPPY:
#ifdef ARROW_WITH_SNAPPY
return true;
#else
return false;
#endif
case Compression::GZIP:
#ifdef ARROW_WITH_ZLIB
return true;
#else
return false;
#endif
case Compression::LZO:
return false;
case Compression::BROTLI:
#ifdef ARROW_WITH_BROTLI
return true;
#else
return false;
#endif
case Compression::LZ4:
case Compression::LZ4_FRAME:
case Compression::LZ4_HADOOP:
#ifdef ARROW_WITH_LZ4
return true;
#else
return false;
#endif
case Compression::ZSTD:
#ifdef ARROW_WITH_ZSTD
return true;
#else
return false;
#endif
case Compression::BZ2:
#ifdef ARROW_WITH_BZ2
return true;
#else
return false;
#endif
default:
return false;
}
}
} // namespace util
} // namespace arrow20
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